Medical endoscope color reducibility calibration device

Abstract

The utility model relates to the technical field of medical endoscope detection, and provides a medical endoscope color reducibility calibration device which comprises a light source box unit, a tested endoscope stabilizing device and a colorimeter. The light source box unit comprises a first supporting frame, a standard light source test box, a standard light source, a standard test pattern, a clamping mechanism, an X-direction linear displacement module and a Y-direction linear displacement module. The standard light source test box is a camera obscura, and the standard light source provides a stable light source required by testing, so that the detection accuracy is improved. A clamping mechanism capable of stably clamping a standard test pattern is arranged in a standard light source test box, and two-dimensional movement of the standard test pattern in the standard light source test box is realized through an X-direction linear displacement module and a Y-direction linear displacement module, so that a focusing function is realized. The device is compact in structure and convenient to carry, and the color reducibility of the medical endoscope can be rapidly and accurately detected and calibrated on site.

Description

Technical Field

[0001] The utility model relates to the technical field of medical endoscope detection, in particular to a color restoration calibration device for a medical endoscope. Background Art

[0002] Medical endoscope is an optical instrument, mainly used for clinical disease inspection, auxiliary treatment and non-open endocavity surgery. It is an indispensable medical instrument for accurate diagnosis and treatment in hospitals. The outstanding feature of using endoscope is that the traditional open surgery that requires a large incision can be completed with minimally invasive surgery with the joint assistance of endoscope, display system and related medical instruments. During the use of endoscope, it is often necessary to use the display system to observe the internal situation of the patient's cavity. The endoscope display system needs to be able to accurately and truly display the endoscope shooting results. When the color reproduction of the display system is not high, the lesion and human tissue will be adhered, which will affect the doctor's judgment on the size of the lesion. In extreme cases, the doctor cannot even recognize the existence of the lesion. Therefore, the quality of the endoscope display system directly affects the doctor's judgment on the size and location of the lesion. The quality of the image image of the display system is determined by the display system and the endoscope. In the national pharmaceutical industry standard YY / T0910.1-2021 "Medical Electrical Equipment Medical Imaging Display System Part 1: Evaluation Method", it is proposed to use a colorimeter and standard test patterns to calibrate the color reproduction of the endoscope.

[0003] At present, the calibration device for the color reproduction of endoscopes is generally a large integrated device with high manufacturing cost, large space occupation, and inconvenient to carry to the site for calibration and testing of endoscopes. In addition, the standard test pattern of the current calibration device is external, and the color temperature of the external light source is unstable, which will cause the color of the captured image sample to fluctuate and deviate, affecting the accuracy of the detection. Utility Model Content

[0004] The purpose of the utility model is to provide a color reproduction calibration device for a medical endoscope in view of the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] The utility model provides a color restoration calibration device for a medical endoscope, comprising:

[0007] A light source box unit, comprising a first support frame, a standard light source test box, a standard light source, a standard test pattern, a clamping mechanism, an X-direction linear displacement module and a Y-direction linear displacement module; the first support frame is mounted on the bottom surface of the standard light source test box; the standard light source is mounted on the inner wall of the standard light source test box; the guide rail seat of the Y-direction linear displacement module is mounted on the inner bottom surface of the standard light source test box, and the guide rail seat of the X-direction linear displacement module is mounted on the slider of the Y-direction linear displacement module; the clamping mechanism is used to clamp the standard test pattern, and the clamping mechanism is mounted on the slider of the X-direction linear displacement module;

[0008] A device for stabilizing the endoscope under test, which is used to clamp the endoscope under test;

[0009] A colorimeter is used to measure the color parameters of the endoscope display system output.

[0010] In the utility model, the standard light source test box is a dark box, and the standard light source provides a stable light source required for the test, which will not be disturbed by external light sources, thereby improving the detection accuracy. A clamping mechanism that can stably clamp the standard test pattern is set in the standard light source test box, and the two-dimensional movement of the standard test pattern in the standard light source test box is realized through the X-axis linear displacement module and the Y-axis linear displacement module, which fully utilizes the internal space of the standard light source test box to realize the focusing function. The device has a compact structure and is convenient to carry to the site for detection and calibration. During the detection, an endoscope is used to shoot the standard test pattern in the standard light source test box, and then a colorimeter is used to read the color coordinate xy value on the endoscope display screen, and compared with the standard xy value of the standard test pattern, so that the color reproduction detection and calibration of the medical endoscope can be completed quickly and accurately on site.

[0011] Furthermore, the standard light source includes a plurality of strip-shaped LED light sources, and the plurality of strip-shaped LED light sources are symmetrically distributed on the left and right inner walls of the standard light source test box.

[0012] Furthermore, the color temperature of the standard light source is 6500K.

[0013] By adopting the above preferred solution, the uniformity of illumination in the standard light source test box is improved, and the requirements of the standard test pattern on color temperature are met.

[0014] Furthermore, the colorimeter is a handheld colorimeter.

[0015] The above preferred solution is convenient to carry and can achieve accurate and fast color measurement.

[0016] Furthermore, the maximum permissible error of the u' and v' space coordinate measurement results of the colorimeter under standard illumination is ±0.004.

[0017] The above preferred solution ensures the accuracy and reliability of the colorimeter in color measurement.

[0018] Furthermore, the first supporting frame is a height-adjustable tripod.

[0019] By adopting the above preferred solution, it is convenient to adjust the height of the standard light source test box to meet the calibration requirements of endoscopes in different working modes.

[0020] Furthermore, the standard light source test box is provided with an opening at the front end, and also includes a shielding member for shielding the opening, and the shielding member is provided with a through hole for the endoscope lens to pass through.

[0021] Furthermore, the shielding member is an openable and closable door panel, or a light-blocking door curtain.

[0022] By adopting the above preferred solution, the shielding member can be opened conveniently, so as to facilitate the position adjustment operation of the standard test pattern.

[0023] Furthermore, the Y-axis linear displacement module includes a first Y-axis linear displacement module and a second Y-axis linear displacement module arranged in parallel, the first Y-axis linear displacement module is located on the left side of the bottom surface of the standard light source test box, and the second Y-axis linear displacement module is located on the right side of the bottom surface of the standard light source test box; the left and right ends of the X-axis linear displacement module guide rail seat are respectively installed on the slider of the first Y-axis linear displacement module and the slider of the second Y-axis linear displacement module.

[0024] The above preferred solution is adopted to improve the displacement stability.

[0025] Furthermore, the sliders of the X-axis linear displacement module, the first Y-axis linear displacement module and the second Y-axis linear displacement module are all threadedly connected with locking screws for locking the position of the sliders.

[0026] By adopting the above preferred solution, the target position is adjusted and locked to ensure position stability.

[0027] Furthermore, the clamping mechanism includes a clamping seat, a pressure plate and a tightening screw. The clamping seat is fixedly mounted on the slider of the X-axis linear displacement module. The clamping seat is provided with a vertical slot along the left and right directions. The pressure plate is arranged in the vertical slot. The tightening screw is threadedly connected to the front side wall of the vertical slot. The head end of the tightening screw is in conflict with the pressure plate. A frame is provided on the outer periphery of the standard test pattern, and the bottom of the frame is located between the rear side wall of the vertical slot and the pressure plate.

[0028] The above preferred solution is adopted to facilitate the replacement of the standard test pattern and ensure the stability of the clamping of the standard test pattern.

[0029] Furthermore, the stabilizing device of the endoscope under test includes a second supporting frame, a horizontal extension frame, a first fastener and a second fastener, the middle part of the horizontal extension frame is installed on the top of the second supporting frame, the first fastener and the second fastener are respectively installed on the front end and the rear end of the horizontal extension frame, the first fastener is used to clamp the handle of the endoscope, and the second fastener is used to clamp the endoscope lens.

[0030] By adopting the above preferred solution, the endoscope to be tested can be fixed quickly and stably.

[0031] Furthermore, the second supporting frame is a height-adjustable tripod.

[0032] The above preferred solution is adopted to facilitate the adjustment of the height of the endoscope.

[0033] Furthermore, the horizontal extension frame is a retractable structure, and the horizontal extension frame is detachably installed on the top of the second support frame via a locking member.

[0034] The above preferred solution can meet the clamping requirements of different types of endoscopes, facilitate disassembly and folding, and improve portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the principle of an implementation method of the utility model.

[0037] Figure 2 It is a three-dimensional diagram of the light source box unit of the utility model.

[0038] Figure 3 It is a cross-sectional view of the light source box unit of the utility model.

[0039] Figure 4 It is a schematic diagram of the standard test pattern clamping and shifting structure of the utility model.

[0040] Figure 5 It is a structural schematic diagram of the tested endoscope stabilizing device of the utility model.

[0041] Reference numerals:

[0042] 10-light source box unit; 11-first support frame; 12-standard light source test box; 121-shielding member; 13-standard light source; 131-strip LED light source; 14-standard test pattern; 15-clamping mechanism; 151-clamping seat; 152-pressing plate; 153-tightening screw; 16-X-axis linear displacement module; 161-locking screw; 17-Y-axis linear displacement module; 171-first Y-axis linear displacement module; 172-second Y-axis linear displacement module; 20-endoscope; 21-endoscope lens; 22-endoscope display system; 30-test endoscope stabilizing device; 31-second support frame; 32-horizontal extension frame; 33-first fastener; 34-second fastener; 40-colorimeter. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figure 1-5 As shown, in one embodiment of the present utility model, a color reproduction calibration device for a medical endoscope comprises:

[0049] The light source box unit 10 comprises a first support frame 11, a standard light source test box 12, a standard light source 13, a standard test pattern 14, a clamping mechanism 15, an X-direction linear displacement module 16 and a Y-direction linear displacement module 17; the first support frame 11 is mounted on the bottom surface of the standard light source test box 12; the standard light source 13 is mounted on the inner wall of the standard light source test box 12; the guide rail seat of the Y-direction linear displacement module 17 is mounted on the inner bottom surface of the standard light source test box 12, and the guide rail seat of the X-direction linear displacement module 16 is mounted on the slider of the Y-direction linear displacement module 17; the clamping mechanism 15 is used to clamp the standard test pattern 14, and the clamping mechanism 15 is mounted on the slider of the X-direction linear displacement module 16;

[0050] The endoscope stabilizing device 30 is used to clamp the endoscope 20;

[0051] The colorimeter 40 is used to measure the color parameters output by the endoscope display system 22 .

[0052] The beneficial effects of adopting the above technical solution are: the standard light source test box is a dark box, and the standard light source provides a stable light source required for the test, which will not be disturbed by external light sources, thereby improving the detection accuracy. A clamping mechanism that can stably clamp the standard test pattern is set in the standard light source test box, and at the same time, the two-dimensional movement of the standard test pattern in the standard light source test box is realized through the X-axis linear displacement module and the Y-axis linear displacement module, which fully utilizes the internal space of the standard light source test box to realize the focusing function. The device has a compact structure and is convenient to carry to the site for detection and calibration. During the detection, an endoscope is used to shoot the standard test pattern in the standard light source test box, and then a colorimeter is used to read the color coordinate xy value on the endoscope display screen and compare it with the standard xy value of the standard test pattern, so that the detection and calibration of the color reproduction of the medical endoscope can be completed quickly and accurately on site.

[0053] like Figure 3As shown, in some other embodiments of the present invention, the standard light source 13 includes a plurality of strip-shaped LED light sources 131, and the plurality of strip-shaped LED light sources 131 are symmetrically distributed on the left and right inner walls of the standard light source test box 12. The color temperature of the standard light source is 6500K. The beneficial effect of adopting the above technical solution is: improving the uniformity of illumination in the standard light source test box and meeting the color temperature requirements of the standard test pattern.

[0054] In some other embodiments of the present invention, the colorimeter 40 is a handheld colorimeter. The beneficial effects of adopting the above technical solution are: convenient to carry, and accurate and fast color measurement.

[0055] In other embodiments of the present invention, the maximum allowable error of the u' and v' space coordinates measured by the colorimeter 40 under standard illumination is ±0.004. The beneficial effect of the above technical solution is that the accuracy and reliability of the colorimeter in color measurement are ensured.

[0056] In some other embodiments of the present invention, the first support frame 11 is a height-adjustable tripod, and the specific structure is not limited and can be obtained from the prior art. The beneficial effect of adopting the above technical solution is that the height of the standard light source test box can be easily adjusted to meet the calibration requirements of endoscopes in different working modes.

[0057] like Figure 2 As shown, in some other embodiments of the present invention, the front end of the standard light source test box 12 is provided with an opening, and also includes a shielding member 121 for shielding the opening, and the shielding member 121 is provided with a through hole for the endoscope lens to pass through. The shielding member 121 is an openable and closable door panel, or a light-shielding door curtain. The beneficial effect of adopting the above technical solution is that the shielding member is easy to open, so as to facilitate the position adjustment operation of the standard test pattern.

[0058] like Figure 4 As shown, in some other embodiments of the present invention, the Y-direction linear displacement module 17 includes a first Y-direction linear displacement module 171 and a second Y-direction linear displacement module 172 arranged in parallel, the first Y-direction linear displacement module 171 is located on the left side of the bottom surface of the standard light source test box 12, and the second Y-direction linear displacement module 172 is located on the right side of the bottom surface of the standard light source test box 12; the left and right ends of the guide rail seat of the X-direction linear displacement module 16 are respectively installed on the slider of the first Y-direction linear displacement module 171 and the slider of the second Y-direction linear displacement module 172. The beneficial effect of adopting the above technical solution is: improving the displacement stability.

[0059] like Figure 4As shown, in some other embodiments of the present invention, the sliders of the X-axis linear displacement module 16, the first Y-axis linear displacement module 171 and the second Y-axis linear displacement module 172 are all threadedly connected with locking screws 161 for locking the slider position. The beneficial effect of adopting the above technical solution is: locking after adjusting to the target position to ensure position stability.

[0060] like Figure 4 As shown, in some other embodiments of the present invention, the clamping mechanism 15 includes a clamping seat 151, a pressure plate 152 and a tightening screw 153. The clamping seat 151 is fixedly mounted on the slider of the X-axis linear displacement module 16. The clamping seat 151 is provided with a vertical card slot along the left and right directions. The pressure plate 152 is arranged in the vertical card slot. The tightening screw 153 is threadedly connected to the front side wall of the vertical card slot. The head end of the tightening screw 153 is in conflict with the pressure plate 152. The standard test pattern 14 is provided with a frame on its periphery, and the bottom of the frame is located between the rear side wall of the vertical card slot and the pressure plate 152. The beneficial effects of adopting the above technical solution are: facilitating the replacement of the standard test pattern and ensuring the stability of the clamping of the standard test pattern.

[0061] like Figure 5 As shown, in other embodiments of the present invention, the endoscope stabilizing device 30 includes a second support frame 31, a horizontal extension frame 32, a first fastener 33 and a second fastener 34. The middle of the horizontal extension frame 32 is mounted on the top of the second support frame 31. The first fastener 33 and the second fastener 34 are respectively mounted on the front and rear ends of the horizontal extension frame 32. The first fastener 33 is used to clamp the handle of the endoscope, and the second fastener 34 is used to clamp the endoscope lens 21. The beneficial effect of adopting the above technical solution is that the endoscope under test can be quickly and stably fixed.

[0062] In some other embodiments of the present invention, the second support frame 31 is a tripod with adjustable height. The beneficial effect of adopting the above technical solution is that the height of the endoscope can be adjusted conveniently.

[0063] In other embodiments of the present invention, the horizontal extension frame 32 is a retractable structure, and the horizontal extension frame 32 is detachably mounted on the top of the second support frame 31 via a locking member. The beneficial effects of the above technical solution are: it can meet the clamping requirements of different types of endoscopes, facilitate disassembly and folding, and improve portability.

[0064] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A color reproduction calibration device for a medical endoscope, characterized in that: include: A light source box unit, comprising a first support frame, a standard light source test box, a standard light source, a standard test pattern, a clamping mechanism, an X-direction linear displacement module and a Y-direction linear displacement module; the first support frame is mounted on the bottom surface of the standard light source test box; the standard light source is mounted on the inner wall of the standard light source test box; the guide rail seat of the Y-direction linear displacement module is mounted on the inner bottom surface of the standard light source test box, and the guide rail seat of the X-direction linear displacement module is mounted on the slider of the Y-direction linear displacement module; the clamping mechanism is used to clamp the standard test pattern, and the clamping mechanism is mounted on the slider of the X-direction linear displacement module; A device for stabilizing the endoscope under test, which is used to clamp the endoscope under test; A colorimeter is used to measure the color parameters of the endoscope display system output.

2. The medical endoscope color reproduction calibration device according to claim 1, characterized in that: The standard light source includes a plurality of strip-shaped LED light sources, and the plurality of strip-shaped LED light sources are symmetrically distributed on the left and right inner side walls of the standard light source test box.

3. The medical endoscope color reproduction calibration device according to claim 2, characterized in that: The color temperature of the standard light source is 6500K.

4. The medical endoscope color reproduction calibration device according to claim 1, characterized in that: The first supporting frame is a height-adjustable tripod.

5. The medical endoscope color reproduction calibration device according to claim 1, characterized in that: The front end of the standard light source test box is provided with an opening, and also includes a shielding member for shielding the opening. The shielding member is provided with a through hole for the endoscope lens to pass through.

6. The medical endoscope color reproduction calibration device according to claim 5, characterized in that: The shielding member is an openable and closable door panel, or a light-shielding door curtain.

7. The medical endoscope color reproduction calibration device according to claim 1, characterized in that: The Y-axis linear displacement module includes a first Y-axis linear displacement module and a second Y-axis linear displacement module which are arranged in parallel, the first Y-axis linear displacement module is located on the left side of the bottom surface of the standard light source test box, and the second Y-axis linear displacement module is located on the right side of the bottom surface of the standard light source test box; the left and right ends of the X-axis linear displacement module guide rail seat are respectively installed on the slider of the first Y-axis linear displacement module and the slider of the second Y-axis linear displacement module.

8. The medical endoscope color reproduction calibration device according to claim 7, characterized in that: The sliders of the X-axis linear displacement module, the first Y-axis linear displacement module and the second Y-axis linear displacement module are all threadedly connected with locking screws for locking the positions of the sliders.

9. The medical endoscope color reproduction calibration device according to claim 8, characterized in that: The clamping mechanism includes a clamping seat, a pressure plate and a tightening screw. The clamping seat is fixedly installed on the slider of the X-axis linear displacement module. The clamping seat is provided with a vertical slot along the left and right directions. The pressure plate is arranged in the vertical slot. The tightening screw is threadedly connected to the front side wall of the vertical slot. The head end of the tightening screw is in conflict with the pressure plate. A frame is provided on the periphery of the standard test pattern, and the bottom of the frame is located between the rear side wall of the vertical slot and the pressure plate.

10. The color reproduction calibration device for a medical endoscope according to claim 1, characterized in that: The stabilizing device of the endoscope under test includes a second supporting frame, a horizontal extension frame, a first fastener and a second fastener. The middle part of the horizontal extension frame is installed on the top of the second supporting frame, the first fastener and the second fastener are respectively installed on the front and rear ends of the horizontal extension frame, the first fastener is used to clamp the handle of the endoscope, and the second fastener is used to clamp the endoscope lens.

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